Lock



March 31; 1925.

A. KENDECHY LOCK Original Filed April 12, 1922 AITORNEY WITNESS:

Patented Mar. 31, 19250 UNITED STATES PATENT OFFICE.

LOCK.

Original application filed April 12, 1922, Serial No. 551,806.

Divided and this application filed January 22,. 1923. Serial No. 614,302.

To all whom it may concern:

Be, it known that 1, ANDREW KnNonoHY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Locks (Case 1)), of which the following is a specification.

This invention relates to improvements in locks and is a division of an application filed by me April 12, 1922, Serial No. 551,806.

An object of the present invention is to provide a novel form of circuit closer, which is especially adapted for controlling one or more circuits in connection with a permutation lock of the character set forth in the above mentioned application, wherein a rotatable member is designed to operate a locking bolt and to simultaneously close one or more electric circuits, whereby an alarm or signal may be actuated as a notification of the operation of the lock.

VJith the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter morefully described, illustrated in the accompanying drawings and pointed out in the appended claim.

In the drawings Figure 1 is a sectional view through a lock showing the application of the invention, the bolt being shown in locked position and the circuit closer in open position.

Figure 2 is a similar view with the position of the parts reversed.

Figure 3 is a detail View of the operating collar and the contacts carried thereby.

Figure 4 is an edge view of the same.

Referring in detail to the drawings, wherein like characters of reference denote corresponding parts, the reference character 10 indicates a lock casing, within which there is slidably mounted a locking bolt 11, the latter being adapted for engagement with a suitable keeper (not. shown). The lock further includes a rotatable operating member 12, which carries a collar or annulus 13 and the latter has extending radially therefrom a lug 1 1 which is adapted to engage the locking bolt in the manner set forthin Figure 1 of the drawings to hold said bolt against inward movement. For this purpose the bolt is provided with a shoulder 15 and an inclined groove, one wall 16 of which is adapted to be engaged by the lug 141 to move the bolt inward to an unlocked position, as shown in Figure 2.

Also carried by the collar 13 is a segmental flange 17 and secured to this flange are spring contacts 18, the latter being slight- 1y spaced from one face of the flange as shown in Figure 1 and being curved to correspond to the curvature of the flange. Secured to the lock casing are spaced station ary contacts 19, the latter being located in the path. of movement of the contacts 18 and engageable therewith to bridge the space between the said contacts 19 for the purpose of closing a circuit or circuits within which the contacts 19 are included. If desired, openings 20 may be provided in the lock casing for the passage of conductor wires (not shown).

lVhile the circuit closer is illustrated in connection with a lock of the character set forth in the above mentioned application, it is not the purpose of the present application to confine it to use with this specific form of block.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having described the invention what is claimed is A look of the character described comprising a sliding bolt having a shoulder and an inclined groove therein, a circular rotatable operating member carrying an annulus thereon, said annulus having a lug extending therefrom for engagement with the bolt, a segmental flange secured to the side of said annulus opposite said lug, said segment carrying spaced spring contacts thereon for engagen'icnt with stationary contacts located in the path of movement of the spring contacts and engageable therewith to bridge the space between the said stationary contacts for the purpose of closing a circuit.

In testimony whereof I affix my signature.

ANDREW KENDECHY, 

